books.google.com - Provides an up-to-date and comprehensive synthesis of currently known information. 'Viroids' describes molecular and biological properties of viroids, known viroid diseases and their detection, the economic impact of viroid diseases and the diverse strategies to control them....http://books.google.com/books/about/Viroids.html?id=6wVtRfI0V8UC&utm_source=gb-gplus-shareViroids
